Mark, My thinking is that the copy of the directories in LLA does not change automatically when you dynamically add a dataset to linklist, and that an LLA refresh is required. This is the requirement if you add a new module to any "frozen" library managed by LLA, including linklist, so why not a new linklist library.
On the other hand VLF caching may work automatically when the library is added to linklist, but generally speaking the saving in directory IO is usually far greater than you get from VLF caching. Ron > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] > On Behalf Of Mark Zelden > Sent: Wednesday, January 09, 2013 3:14 PM > To: [email protected] > Subject: Re: [IBM-MAIN] LLA Management of Linklst datasets > > On Wed, 9 Jan 2013 12:38:37 -0800, retired mainframer <retired- > [email protected]> wrote: > > >My rule of thumb, drilled into me long before z/OS, was "any change to > >the link list merits a refresh of LLA." Don't know if it's still valid > >but it never caused a problem. To me, it looks like very cheap insurance. > > > > That would be true of changing something in an existing library in the LNKLST, > but not to dynamic add of a library. The second statement about cheap > insurance isl true, although I would change it to LLA UPDATE. A refresh of > the > entire LNKLST could break something (plus has a negative performance > impact). > > Mark > -- > Mark Zelden - Zelden Consulting Services - z/OS, OS/390 and MVS > mailto:[email protected] > Mark's MVS Utilities: http://www.mzelden.com/mvsutil.html > Systems Programming expert at http://expertanswercenter.techtarget.com/ > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, send email to > [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
